Reducing Firearm Suicide Among Veterans: Evaluating the Effectiveness of Peer-Delivered Lethal Means Counseling

Phase 1

Not yet recruiting

• Conditions: Suicide; Secure Firearm Storage

• Registration Number: NCT07033884
• Lead Sponsor: VA Office of Research and Development

Brief Summary

Suicide prevention is a top priority for the Department of Veterans Affairs (VA), with a major emphasis on developing innovative and effective ways to prevent firearm suicide. Research suggests that secure firearm storage can decrease risk for suicide and the current project aims to evaluate a novel approach to increasing secure storage through an experimental design. The intervention takes one-hour or less and involves a peer-to-peer discussion about secure firearm storage, focusing on participants' reasons for and against using more secure firearm storage practices. The project will evaluate whether Veterans who receive this intervention report greater use of secure firearm storage practices than Veterans who receive only psychoeducational materials on this topic. Secure firearm storage practices will be evaluated over the course of one year. It is hypothesized that Veterans who engage in the peer-to-peer intervention will report greater use of secure firearm storage practices than those who receive only psychoeducational materials. Relevant to Veterans' health, secure firearm storage decreases Veteran firearm suicide risk and may help prevent suicide. In addition, this peer-delivered intervention is preferred by Veterans, and has the flexibility to be implemented before suicide risk develops and in settings outside of the VA. This means the intervention has the potential to reach more Veterans, even those who do not receive VA healthcare.

Detailed Description

Veterans die by suicide at a rate 1.72 times greater than civilian counterparts. Notably, 72% of Veteran suicides result from a firearm, making firearm suicide prevention a leading priority for the Department of Veterans Affairs (VA). Secure firearm storage (e.g., unloaded, locked) mitigates risk of firearm suicide, but these practices are uncommon among firearm owning Veterans. Lethal means counseling (LMC), an intervention that promotes reduced access to potentially lethal suicide methods (e.g., firearms) through one-on-one interactions, is a promising approach to promoting secure firearm storage among Veterans. However, there are limitations to the reach and acceptability of LMC among firearm owning Veterans within VA, including healthcare providers' limited time during appointments and firearm owners' stated preference to discuss firearms with those perceived to be credible, such as fellow Veterans. As a result, most Veteran firearm owners, including those with recent suicidal ideation, report that they have not discussed firearm access with their healthcare providers. It is crucial to expand LMC efforts to non-clinician messengers to reach more Veterans. What remains unknown is how effective preferred messengers are in changing firearm storage behaviors, as well as what mechanisms impact or account for subsequent changes in firearm storage behaviors. Thus, there is a critical need to evaluate the effectiveness of peer-delivered LMC among Veteran firearm owners. Without such knowledge, preventing suicide within this population will likely remain difficult.

The overall objective of the current study is to estimate the effectiveness, as well as factors that impact or account for the effectiveness, of peer-delivered LMC. My central hypothesis is that peer-delivered LMC will lead to greater use of secure firearm storage and this will be accounted for and influenced by mechanisms conceptualized by the Theory of Planned Behavior (TPB), those proposed to be relevant in prior research, and unique mechanisms that have yet to be identified. This hypothesis was formulated on the basis of preliminary data generated through a Clinical Sciences Research and Development Career Development Award-1. During that study, I adapted a healthcare provider-delivered LMC intervention, found to increase secure firearm storage among National Guard members, for peer-delivery through an expert panel. The resulting intervention, Peer Engagement and Exploration of Responsibility and Safety (PEERS), is a 15-60 minute one-on-one LMC session centered around Motivational Interviewing principles and delivered by Veterans. In a single arm pilot trial, PEERS was feasible and acceptable among Veteran firearm owners. Thus, the rationale for this project is to determine the effectiveness, as well as mechanisms that impact or account for the effectiveness, of PEERS, providing new opportunities for suicide prevention among Veteran firearm owners. Two specific aims are proposed:

1. Estimate the superiority of PEERS compared to a psychoeducation control condition on secure firearm storage in a randomized controlled trial (N = 100; 1:1). My working hypothesis is Veterans receiving PEERS will demonstrate greater use of secure firearm storage than Veterans in the psychoeducation condition.

2. Identify indirect (2a \& 2c) and moderating (2b \& 2c) effects of the relationship between PEERS and secure firearm storage. My working hypothesis, based on the TPB, is that changes in secure firearm storage will be indirect through attitudes towards secure firearm storage, subjective norms about secure firearm storage, perceived ease of changing firearm storage, and intentions to change firearm storage (2a). I further hypothesize, based on prior research, that primary motivation for ownership (personal/family protection), Posttraumatic Stress Disorder hyperarousal symptoms, and low belief in the relationship between firearms and suicide risk, will attenuate changes in secure firearm storage (2b). To identify other factors that may influence the relationship between PEERS and secure firearm storage, I will recruit up to 24 Veterans who participated in PEERS for individual qualitative interviews regarding barriers and facilitators to engagement in the intervention (2c).

Study Timeline

• Status Verified: 2025-06
• Study First Submitted: 2025-06-09
• Study First Submitted QC: 2025-06-13
• Last Update Submitted: 2025-06-13
• Study First Posted: 2025-06-24
• Last Update Posted: 2025-06-24
• Study Start: 2026-03-02
• Primary Completion: 2029-05-31
• Study Completion: 2030-09-30

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Veteran
• Owns at least one personal firearm
• Displays some level of unsecure firearm storage (i.e., scores < 6 on MIRECC Lethal Means Questionnaire eligibility screener)
• Capable of meeting via virtual modalities for appointments (i.e., owns a device capable of connecting for virtual appointments, has internet access)

Exclusion Criteria

• Active psychosis
• Insufficient English language skills
• No reliable access to a telephone and/or device for attending appointments via virtual modalities
• Prior participation in the PI's CDA-1 study (N = 16)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Modified MIRECC Lethal Means Questionnaire	Eligibility Screening, Baseline, Follow-ups (1-week, 6-months, 1-year)	The MIRECC Lethal Means Questionnaire (Simonetti, 2017) is a 13-item self-report measure designed to assess experiences with firearms. Items include questions about number and type of firearms owned, primary reason for firearm ownership, and firearm handling. It also includes items related to firearm storage practices. Two open-ended questions were also added to allow participants to describe, in their own words, their current firearm storage practices, and at follow-ups to describe any changes they've made to their firearm storage that is not captured in the other questions. Responses to three key firearm storage items will be totaled to create a composite storage score, with higher scores indicating safer storage practices. Range of values: 0-6.
Theory of Planned Behavior	Baseline and Follow-ups (1-week, 6-months, 1-year)	A 15-item measure was designed using Francis and colleagues' (2004) guide to assess each of the four subdomains of the Theory of Planned Behavior. Specifically, there are three items assessing intentions to increase secure firearm storage (e.g., "I intend to increase my use of secure firearm storage"), four items assessing attitudes towards increasing secure firearm storage, four items assessing subjective norms surrounding increasing secure firearm storage (e.g., "People who are important to me want me to increase my use of secure firearm storage"), and four items assessing perceived behavioral control of increasing secure firearm storage. All items include 7-point Likert scale response options and the items within subdomains (e.g., intentions, attitudes) are averaged to produce overall subdomain scores. Range of values: 1-7.
Beliefs and Attitudes about Firearms and Suicide	Baseline and Follow-ups (1-week, 6-months, 1-year)	A 3-item questionnaire used to evaluate belief in relationships related to suicide risk. Items include, "To what extent do you think owning a firearm is related to suicide risk?", "To what extent do you think how a firearm is stored (e.g., gun safe, loaded) is related to suicide risk?", and "To what extent do you agree with the statement 'if somebody wants to die by suicide and you prevent them from using a specific method, they will simply find another way to die'?" Participants will respond on a 5-point Likert scale, with higher scores indicating higher belief in the statement or described relationship. Range of values: 0-12.
Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5)	Baseline and Follow-ups (1-week, 6-months, 1-year)	PTSD symptoms will be assessed using the PCL-5, including the criterion A face page (Blevins et al., 2015). The PCL-5 includes a brief set of questions assessing whether an individual has experienced a criterion A stressor, followed by a 20-item self-report questionnaire designed to assess each of the 20 Diagnostic and Statistical Manual of Mental Disorders - 5th Edition (DSM-5) PTSD symptoms. Participants will first be asked to respond to five questions on the face page assessing for criterion A stressors. Next, they will be asked to respond to the 20-item self-report measure using a 5-point Likert scale, with higher scores suggesting higher symptom severity. In addition to a total score, the PCL-5 yields four subscale scores reflecting the four PTSD symptom clusters (i.e., re-experiencing, avoidance, alteration in cognitions and mood, and arousal and reactivity). Range of values: 0-80.

Secondary Outcome Measures

Name	Time	Method
Semi-Structured Interview	Post 1-year Follow-up	Qualitative feedback on barriers and facilitators to engagement in PEERS will be obtained through audio-recorded semi-structured interviews with up to 24 Veterans who were randomized to the PEERS condition. In addition to self-generated barriers and facilitators to engagement in PEERS, Veterans will be asked to identify non-VHA settings in which they may prefer to receive such an intervention. The semi-structured interview template was adapted from Dobscha et al., 2021.

Trial Locations

Locations (1)

Southeast Louisiana Veterans Health Care System, New Orleans, LA; 🇺🇸 New Orleans, Louisiana, United States